在我的应用中,我想使用网络时间,而不是设备时间。我的应用程序要求时间应该是正确的。
我正在尝试从 NTS 服务器 获取时间,但加载程序一直在运行并且没有停止。我等了 30 多分钟,但仍然没有得到任何东西。
我想知道是否有任何其他方法可以从网络获取时间,因为我认为从网络获取时间不会花费太多时间。
public class MainActivity extends Activity {
public static final String TIME_SERVER = "time-a.nist.gov";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnGetTime = (Button)findViewById(R.id.button1);
btnGetTime.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
new GetTimeFromNetwork().execute();
}
});
}
public class GetTimeFromNetwork extends AsyncTask<String, Void, String> {
ProgressDialog progressDialog;
@Override
protected void onPreExecute() {
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Loading...");
progressDialog.setCancelable(false);
progressDialog.show();
Log.i( "pre execute","yes");
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
Log.i("In Get time From Server class", "yes");
try {
NTPUDPClient timeClient = new NTPUDPClient();
InetAddress inetAddress = InetAddress.getByName(TIME_SERVER);
TimeInfo timeInfo = timeClient.getTime(inetAddress);
//long returnTime = timeInfo.getReturnTime(); //local device time
long returnTime = timeInfo.getMessage().getTransmitTimeStamp()
.getTime(); //server time
Date time = new Date(returnTime);
Log.i("time", "Time from " + TIME_SERVER + ": " + time);
} catch (Exception e) {
// TODO: handle exception
Log.e("error",e.getMessage());
}
return null;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
progressDialog.dismiss();
} }
}
最佳答案
这个解决方案对我有用:
在你的模块中导入这个依赖(也许你已经有了):
compile 'commons-net:commons-net:3.3'
这是获取本地/网络时间的示例。如您所知,您应该像处理解决方案一样在异步任务中运行它。
public static final String TIME_SERVER = "time-a.nist.gov";
public static void printTimes() throws IOException {
NTPUDPClient timeClient = new NTPUDPClient();
InetAddress inetAddress = InetAddress.getByName(TIME_SERVER);
TimeInfo timeInfo = timeClient.getTime(inetAddress);
//long returnTime = timeInfo.getReturnTime(); //local device time
long returnTime = timeInfo.getMessage().getTransmitTimeStamp().getTime(); //server time
Date time = new Date(returnTime);
Log.e("getCurrentNetworkTime", "Time from " + TIME_SERVER + ": " + time);
Log.e("Local time", "Local time");
Log.e("Local time", "Current time: " + new Date(System.currentTimeMillis()));
Log.e("Local time", "Time info: " + new Date(timeInfo.getReturnTime()));
Log.e("Local time", "GetOriginateTimeStamp: " + new Date(timeInfo.getMessage().getOriginateTimeStamp().getTime()));
Log.e("NTP time", "Time from " + TIME_SERVER + ": " + time);
Log.e("Local time", "Time info: " + new Date(timeInfo.getMessage().getReceiveTimeStamp().getTime()));
Log.e("Local time", "GetOriginateTimeStamp: " + new Date(timeInfo.getMessage().getTransmitTimeStamp().getTime()));
}
仅获取您的净时间的摘要:
public static long getNetworkTime() throws IOException {
NTPUDPClient timeClient = new NTPUDPClient();
InetAddress inetAddress = InetAddress.getByName(TIME_SERVER);
TimeInfo timeInfo = timeClient.getTime(inetAddress);
return timeInfo.getMessage().getReceiveTimeStamp().getTime();
}
希望对您有所帮助!!
关于java - 如何在 Android 中从网络获取时间,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31129835/